Laserfiche WebLink
LLNL-AR-788093 <br /> External <br /> III. Category B <br /> 1. CWC 132: Aqueous solution with metals <br /> Site 2014 quantity (lb) 2018 quantity (lb) <br /> LLNL 33,880 24,571 <br /> 2.1 Floor Care Effluent <br /> In an effort to improve both pollution prevention and worker health and safety, the team <br /> that carries out floor maintenance and floor stripping operations routinely tries alternative <br /> stripping and finish products, such as products that do not contain zinc and/or are Green <br /> Seal-certified. As a result, the floor stripping process generated approximately 3,063 lbs <br /> of CWC 132 waste in 2018 compared to 20,426 lbs in 2014. <br /> 2. CWC 134: Aqueous Solution with Total Organic Residues Less Than 10 <br /> Percent <br /> Site 2014 quantity (lb) 2018 quantity (lb) <br /> LLNL 666,682 852,409 <br /> 2.1 B322 Plating Shop Rinse Water Recycling <br /> Water generated from the rinsing of parts in the Building 322 plating shop is typically <br /> contaminated with organic chemicals and hazardous metals used in plating operations. <br /> While the shops employ pollution prevention measures to minimize wastewater <br /> generation during rinsing operations by using spray rinsing of parts rather than drag out <br /> rinsing, this is still one of the largest hazardous waste streams at LLNL. The wastewater <br /> generated from this process is reclaimed using an evaporator unit, hard-plumbed into the <br /> B322 shop's rinse water collection system. Water processed in the evaporator is then <br /> reused as rinse water in the shop. <br /> The increase in the amount of Plating Shop rinse water recycling from 2014 to 2018 is <br /> attributed to an increase in plating shop work. <br /> As noted in previous SB 14 Plans/Reports, this CWC 134 waste represented the largest <br /> hazardous waste stream generated at LLNL. However, the bulk of this waste stream was <br /> reconditioned and recycled through Building 322 evaporator unit. Because this single <br /> waste stream is so large, it was excluded when calculating LLNL Category B wastes so <br /> as not to dwarf other waste streams of significance. <br /> September 1, 2019 SB 14 Report III-1 <br /> ESH-EFA-M-19-16592 <br />